(English Medium) ICSE Class 10 - CISCE Question Bank Solutions for Chemistry

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Nitric acid on standing develops brownish colour which may be attributed to the presence of :

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 Concentrated nitric acid oxidises phosphorus to :

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When treated with nitric acid which of the following liberate hydrogen?

Give two equations to show the conversion of a unsaturated compound to
saturated compound.

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The catalyst used in the manufacture of HNO₃ by Ostwald process is

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Aqua regia is a mixture of _______ and________

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Furning nitric acid is obtained by dissolving an excess of _______ in conc. Nitric acid

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98% nitric acid is obtained by distilling 68% nitric acid with ________ under ______

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Ammonal is a mixture of ________ and __________

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3 Cu + 8 HNO₃ (dilute) → _______ + 4H₂O + _________

Why does ethene undergo addition reactions?

Give three uses of ethene.

Write balanced equation for the preparation of nitric acid from potassium nitrate.

Write the observation and name of the product for the following:

When ethene is passed in bromine solution in CCl₄.

How is ethyne prepared in the laboratory?

Give reason for the following:
In the laboratory preparation of nitric acid, the mixture of concentrated sulphuric acid and sodium nitatre should not be heated very strongly, above 200°C

How are addition reactions of ethene different from ethyne?

Complete and balance the following equation:
Cu + HNO₃ → NO₂ + ________+ _________

Write the equations to show what happens when ethyne gas reacts with
Bromine water

How will you convert
Ethyne to ethane